[ENH] Test and Score: Copy selected rows to clipboard

Orange/widgets/data/owtable.py

@@ -1,7 +1,5 @@
 import sys
 import threading
-import io
-import csv
 import itertools
 import concurrent.futures
 
@@ -18,7 +16,7 @@
 )
 from AnyQt.QtGui import QColor, QClipboard
 from AnyQt.QtCore import (
-    Qt, QSize, QEvent, QByteArray, QMimeData, QObject, QMetaObject,
+    Qt, QSize, QEvent, QObject, QMetaObject,
     QAbstractProxyModel, QIdentityProxyModel, QModelIndex,
     QItemSelectionModel, QItemSelection, QItemSelectionRange,
 )
@@ -35,7 +33,8 @@
 from Orange.widgets.utils.itemselectionmodel import (
     BlockSelectionModel, ranges, selection_blocks
 )
-from Orange.widgets.utils.tableview import TableView
+from Orange.widgets.utils.tableview import TableView, \
+    table_selection_to_mime_data
 from Orange.widgets.utils.widgetpreview import WidgetPreview
 from Orange.widgets.widget import OWWidget, Input, Output
 from Orange.widgets.utils import datacaching
@@ -163,47 +162,6 @@ def rowCount(self, parent=QModelIndex()):
         return stop - start
 
 
-def table_selection_to_mime_data(table):
-    """Copy the current selection in a QTableView to the clipboard.
-    """
-    lines = table_selection_to_list(table)
-
-    as_csv = lines_to_csv_string(lines, dialect="excel").encode("utf-8")
-    as_tsv = lines_to_csv_string(lines, dialect="excel-tab").encode("utf-8")
-
-    mime = QMimeData()
-    mime.setData("text/csv", QByteArray(as_csv))
-    mime.setData("text/tab-separated-values", QByteArray(as_tsv))
-    mime.setData("text/plain", QByteArray(as_tsv))
-    return mime
-
-
-def lines_to_csv_string(lines, dialect="excel"):
-    stream = io.StringIO()
-    writer = csv.writer(stream, dialect=dialect)
-    writer.writerows(lines)
-    return stream.getvalue()
-
-
-def table_selection_to_list(table):
-    model = table.model()
-    indexes = table.selectedIndexes()
-
-    rows = sorted(set(index.row() for index in indexes))
-    columns = sorted(set(index.column() for index in indexes))
-
-    lines = []
-    for row in rows:
-        line = []
-        for col in columns:
-            val = model.index(row, col).data(Qt.DisplayRole)
-            # TODO: use style item delegate displayText?
-            line.append(str(val))
-        lines.append(line)
-
-    return lines
-
-
 TableSlot = namedtuple("TableSlot", ["input_id", "table", "summary", "view"])
 
 

Orange/widgets/evaluate/owtestandscore.py

@@ -1121,6 +1121,9 @@ def onDeleteWidget(self):
         self.__executor.shutdown(wait=False)
         super().onDeleteWidget()
 
+    def copy_to_clipboard(self):
+        self.score_table.copy_selection_to_clipboard()
+
 
 class UserInterrupt(BaseException):
     """

Orange/widgets/evaluate/tests/test_owtestandscore.py

@@ -7,6 +7,7 @@
 import numpy as np
 from AnyQt.QtCore import Qt
 from AnyQt.QtTest import QTest
+from AnyQt.QtWidgets import QApplication
 import baycomp
 
 from Orange.classification import MajorityLearner, LogisticRegressionLearner, \
@@ -693,6 +694,22 @@ def test_unique_output_domain(self):
         output = self.get_output(self.widget.Outputs.predictions)
         self.assertEqual(output.domain.metas[0].name, 'random forest (1)')
 
+    def test_copy_to_clipboard(self):
+        self.send_signal(self.widget.Inputs.train_data, Table("iris"))
+        self.send_signal(self.widget.Inputs.learner, RandomForestLearner(), 0)
+        self.wait_until_finished()
+        view = self.widget.score_table.view
+        model = self.widget.score_table.model
+        selection_model = view.selectionModel()
+        selection_model.select(model.index(0, 0),
+                               selection_model.Select | selection_model.Rows)
+
+        self.widget.copy_to_clipboard()
+        clipboard_text = QApplication.clipboard().text()
+        view_text = "\t".join([str(model.data(model.index(0, i)))
+                               for i in (0, 3, 4, 5, 6, 7)]) + "\r\n"
+        self.assertEqual(clipboard_text, view_text)
+
 
 class TestHelpers(unittest.TestCase):
     def test_results_one_vs_rest(self):

Orange/widgets/evaluate/utils.py

@@ -4,15 +4,17 @@
 
 import numpy as np
 
-from AnyQt.QtWidgets import QHeaderView, QStyledItemDelegate, QMenu
-from AnyQt.QtGui import QStandardItemModel, QStandardItem
+from AnyQt.QtWidgets import QHeaderView, QStyledItemDelegate, QMenu, \
+    QApplication
+from AnyQt.QtGui import QStandardItemModel, QStandardItem, QClipboard
 from AnyQt.QtCore import Qt, QSize, QObject, pyqtSignal as Signal, \
     QSortFilterProxyModel
 from sklearn.exceptions import UndefinedMetricWarning
 
 from Orange.data import Variable, DiscreteVariable, ContinuousVariable
 from Orange.evaluation import scoring
 from Orange.widgets import gui
+from Orange.widgets.utils.tableview import table_selection_to_mime_data
 from Orange.widgets.gui import OWComponent
 from Orange.widgets.settings import Setting
 
@@ -209,3 +211,9 @@ def update_header(self, scorers):
             item.setToolTip(score.long_name)
             self.model.setHorizontalHeaderItem(col, item)
         self._update_shown_columns()
+
+    def copy_selection_to_clipboard(self):
+        mime = table_selection_to_mime_data(self.view)
+        QApplication.clipboard().setMimeData(
+            mime, QClipboard.Clipboard
+        )

Orange/widgets/utils/tableview.py

@@ -1,4 +1,8 @@
-from AnyQt.QtCore import Signal, QItemSelectionModel, Qt, QSize, QEvent
+import io
+import csv
+
+from AnyQt.QtCore import Signal, QItemSelectionModel, Qt, QSize, QEvent, \
+    QByteArray, QMimeData
 from AnyQt.QtGui import QMouseEvent
 from AnyQt.QtWidgets import QTableView, QStyleOptionViewItem, QStyle
 
@@ -77,3 +81,44 @@ def changeEvent(self, event: QEvent) -> None:
         if event.type() in (QEvent.StyleChange, QEvent.FontChange):
             table_view_compact(self)
         super().changeEvent(event)
+
+
+def table_selection_to_mime_data(table):
+    """Copy the current selection in a QTableView to the clipboard.
+    """
+    lines = table_selection_to_list(table)
+
+    as_csv = lines_to_csv_string(lines, dialect="excel").encode("utf-8")
+    as_tsv = lines_to_csv_string(lines, dialect="excel-tab").encode("utf-8")
+
+    mime = QMimeData()
+    mime.setData("text/csv", QByteArray(as_csv))
+    mime.setData("text/tab-separated-values", QByteArray(as_tsv))
+    mime.setData("text/plain", QByteArray(as_tsv))
+    return mime
+
+
+def lines_to_csv_string(lines, dialect="excel"):
+    stream = io.StringIO()
+    writer = csv.writer(stream, dialect=dialect)
+    writer.writerows(lines)
+    return stream.getvalue()
+
+
+def table_selection_to_list(table):
+    model = table.model()
+    indexes = table.selectedIndexes()
+
+    rows = sorted(set(index.row() for index in indexes))
+    columns = sorted(set(index.column() for index in indexes))
+
+    lines = []
+    for row in rows:
+        line = []
+        for col in columns:
+            val = model.index(row, col).data(Qt.DisplayRole)
+            # TODO: use style item delegate displayText?
+            line.append("" if val is None else str(val))
+        lines.append(line)
+
+    return lines